Science
SPAWAR-CAL-O
Naval Calibration Payload · US Navy SPAWAR
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SPAWAR-CAL-O, a US Navy Space and Naval Warfare Systems Command calibration payload launched on STP-2, providing a known reference target for ground-based radar systems to verify tracking accuracy.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 280–285 mi (451–459 km)
- Inclination
- 97.4°
- One orbit
- 93.5 minutes15.4 orbits a day
- NORAD ID
- 43766
- Int’l designator
- 2018-099J
- Launched
- 2018
Orbital elements from CelesTrak, as of 22 Sep 2026.
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